This model was designed to be used with a combo preamp for portable organs and keyboards.

It has only one rotor and has no tweeter so the tone will be somewhat dull as compared to 2 rotor Leslies.  Despite having a lower model number, this is the 11 pin version of an 825.

Amplifier Type	Solid State
Output Power	70 Watts
Drum	1 - 12" Speaker
Horn	None
Speeds	3 Speed (Chorale/Stop/Tremolo)
Interface	11 Pin